Claims:We Claim:
1. A foot pedal assembly (100) for a vehicle, said foot pedal assembly (100) comprising:
a pedal (101) having a first end for engaging a foot (101a) and a second end having a cam profile (101b);
a force measuring element (102) attached to said cam profile (101b) of said pedal (101) in a way that rotary movement of said cam profile (101b) causes change in output characteristics of said force measuring element (102);
said force measuring element (102) connected to an Engine control unit (103) for transmitting the change in output characteristics of said force measuring element (102).

2. The foot pedal assembly (100) as claimed in claim 1, wherein movement in said cam profile (101b) causes movement in force measuring element (102).

3. The foot pedal assembly (100) as claimed in claim 1, wherein said force measuring element (102) receives the energy from battery of said vehicle.

4. The foot pedal assembly (100) as claimed in claim 1, wherein said force measuring element (102) comprises a load cell (102a), a strain gauge (102b) and an amplifier (102c).

5. The foot pedal assembly (100) as claimed in claim 4, wherein said amplifier (102c) receives the output characteristics in said force measuring element (102) and send it to said Engine control unit (103).
, Description:Complete Specification:
The following specification describes and ascertains the nature of this invention and the manner in which it is to be performed.
Field of the invention
[0001] The invention relates to a foot pedal assembly for a vehicle.

Background of the invention
[0002] The pedals for operating a motor vehicle, for example, the accelerator, brake and clutch pedals have included a drive by wire electronic throttle without any cables from the accelerator pedal to the device it is intended to operate. The acceleration pedal module consists of the accelerator pedal and an angular position sensor as potentiometer or touchless hall-effect sensor. This sensor registers the movement and position of accelerator. The signal can be output in analog or digital form. The accelerator pedal is mostly made out of plastic.

[0003] The patent application discloses US20050217414 A1 discloses a drive by wire assembly with force measuring sensor. A drive-by-wire assembly for a motor vehicle including a foot-engaging member configured to be engaged by a foot of a user. The foot-engaging member is configured to remain stationary when engaged by a foot of a user. A force-measuring sensor is secured to the foot-engaging member and is configured to provide an output signal based on a force applied by a foot of a user.

Brief description of the accompanying drawings:
[0004] Different mode of the invention is disclosed in detail in the description and illustrated in the accompanying drawing:
[0005] FIG. 1 illustrates a foot pedal assembly according to an embodiment in the invention.

Detailed description of the embodiments
[0006] Figure 1 illustrates a foot pedal assembly 100 for a vehicle according to an embodiment of the disclosure. The foot pedal assembly 100 comprises a pedal 101 having a first end for engaging a foot 101a and a second end having a cam profile 101b. The foot pedal assembly 100 comprises a force-measuring element 102 attached to the cam profile 101b of the pedal 101 in a way that rotary movement of the cam profile 101b causes change in output characteristics of the force-measuring element 102. The force-measuring element 102 is connected to an Engine control unit 103 for transmitting the change in output characteristics of the force-measuring element 102. In the foot pedal assembly 100, the movement in the cam profile 101b causes movement in force measuring element 102.

[0007] Here the foot pedal assembly 100, when the user presses the pedal 101, the cam profile 101b rotates at an angle; the rotary movement of the cam profile 101b creates strain in the force-measuring element 102 attached to the cam profile 101b. This change in strain causes force-measuring element 102 creates change in output characteristics, which transmits to amplifier 102c, and signal are boosted and again to transmits to Engine control unit 103. The pedal 101 have spring-loaded element 104 which is to retrieve the pedal 101 back to original position when user releases the force applied on pedal 101.

[0008] According to an embodiment of the disclosure, in the foot pedal assembly 100, the force-measuring element 102 receives the energy from battery of the vehicle. When the user switches on the vehicle by inserting the key into the vehicle, the force-measuring element 102 is activated from the energy received by the battery of the vehicle.

[0009] According to an embodiment of the disclosure, in the foot pedal assembly 100, the force-measuring element 102 comprises a load cell 102a, a strain gauge 102b and an amplifier 102c. The configuration of the force-measuring element 102 can be of any type. For example, the strain gauge 102b is stick on the load cell 102a. The strain gauge 102b and load cell 102a is employed to get the output characteristics. The strain gauge 102b gets the strain when the pedal is pressed and the ramp in cam profile 101b transfers the load to the strain gauge 102b and the load cell 102a. The load applied on the strain gauge 102b makes the resistance vary. The varied resistance is proportional to the change in load. The output of the strain gauge 102b is connected to the amplifier 102c to boost the output signal to the desired output characteristic.

[0010] In the foot pedal assembly 100, the amplifier 102c receives the output characteristics in the force measuring element 102 and send it to the engine control unit 103. The amplifier 102c refers to a conditioning device used here to clean up the signal received from the strain gauge 102b and then send it to the Engine control unit 103.

[0011] According to an embodiment of the disclosure, in this foot pedal assembly 100, the strain gauge 102b and the load cell 102a can be applied in a multiple to get multiple output. The pedal 101 having ellipse cam profile 101b in pivot end, multiple load cell and the strain gauge are constructed with positive contact or slightly loaded with the two sides of pedal ellipse cam profile in pivot ends. Advantage of Taking Multiple output is to increase accuracy and monitor the Main Output characteristic, designing of second lowered output characteristic helps ECU to Trigger Limp home mode if synchronicity of first output fails as a safety feature vehicle operates at minimal performance of standard.

[0012] By using this foot pedal assembly 100 as disclosed above, the ease of serviceability is achieved as the strain gauge 102b and the load cell 102a can be easily replaced without affecting the overall foot pedal assembly 100. One of the main advantage is that the kinetic energy is directly converted into the varying output voltage proportional to the varying travel in pedal 101. This will eliminate errors in synchronicity of the output voltage. Also here, the moving parts are less as compared to the conventional type of foot pedal so by employing the force-measuring element 102 the lifetime of the foot pedal assembly 100 is improved.

[0013] ‘Adapted’ or ‘arranged’, in the context of the instant disclosure, refers to the technical capability or the technical capacity of a component, in relation to which the term ‘adapted’ or ‘arranged’ is used, to carry out or executed a specified action or actions, upon the requirement of the specified action or actions to be carried out or executed. Moreover, the usage of the term ‘adapted’ or ‘arranged’ here, is in reference with the normal technical capability or technical capacity of the component, imparted by the design or the structure or the composition of the component, and not in reference with any special or extraneous capability or capacity, beyond the scope of the normal technical capability or technical capacity. Therefore, there is a need to address this problem

[0014] It should be understood that embodiments explained in the description above are only illustrative and do not limit the scope of this invention. Many such embodiments and other modifications and changes in the embodiment explained in the description are envisaged. The scope of the invention is only limited by the scope of the claims